# Books Make your ebook reader’s actions available in the Shortcuts app by adopting schemas for common reading actions. ## Discussion The `.books` domain defines app schemas that provide a structured representation for common reading actions and content. Apply schemas in the `.books` domain to make your ebook reader’s functionality available as actions in the Shortcuts app. Schemas in this domain don’t make your conforming types discoverable by Apple Intelligence and Siri. > Tip: Xcode generates a template implementation when you type `books_` and select a schema from the suggestions list. For more information about app schemas, see [App schema domains](/documentation/AppIntents/app-schema-domains). ## Topics ### Actions [`var navigatePage: some AppSchemaIntent`](/documentation/AppIntents/AppSchema/BooksIntent/navigatePage) An intent schema that navigates to the next or previous page. [`var openBook: some AppSchemaIntent`](/documentation/AppIntents/AppSchema/BooksIntent/openBook) An intent schema that opens the specified book. [`var updateCharacterSpacing: some AppSchemaIntent`](/documentation/AppIntents/AppSchema/BooksIntent/updateCharacterSpacing) An intent schema that updates the character spacing for a book. [`var updateFontSize: some AppSchemaIntent`](/documentation/AppIntents/AppSchema/BooksIntent/updateFontSize) An intent schema that updates the font size for a book. [`var updateLineSpacing: some AppSchemaIntent`](/documentation/AppIntents/AppSchema/BooksIntent/updateLineSpacing) An intent schema that updates the line spacing for a book. [`var updateSettings: some AppSchemaIntent`](/documentation/AppIntents/AppSchema/BooksIntent/updateSettings) An intent schema that updates the settings for a book. [`var updateWordSpacing: some AppSchemaIntent`](/documentation/AppIntents/AppSchema/BooksIntent/updateWordSpacing) An intent schema that updates the word spacing for a book. [`protocol BooksIntent`](/documentation/AppIntents/AppSchema/BooksIntent) Identifies intent schemas in the books domain. ### Content and parameter types [`var audiobook: some AppSchemaEntity`](/documentation/AppIntents/AppSchema/BooksEntity/audiobook) An entity schema for an audiobook. [`var book: some AppSchemaEntity`](/documentation/AppIntents/AppSchema/BooksEntity/book) An entity schema for a book. [`var settings: some AppSchemaEntity`](/documentation/AppIntents/AppSchema/BooksEntity/settings) An entity schema for settings. [`protocol BooksEntity`](/documentation/AppIntents/AppSchema/BooksEntity) Identifies entity schemas in the books domain. ### Types for static parameters [`var contentType: some AppSchemaEnum`](/documentation/AppIntents/AppSchema/BooksEnum/contentType) An enum schema for a content type parameter. [`var font: some AppSchemaEnum`](/documentation/AppIntents/AppSchema/BooksEnum/font) An enum schema for a font parameter. [`var fontSize: some AppSchemaEnum`](/documentation/AppIntents/AppSchema/BooksEnum/fontSize) An enum schema for a font size parameter. [`var navigationDirection: some AppSchemaEnum`](/documentation/AppIntents/AppSchema/BooksEnum/navigationDirection) An enum schema for a navigation direction parameter. [`var pageNavigationSetting: some AppSchemaEnum`](/documentation/AppIntents/AppSchema/BooksEnum/pageNavigationSetting) An enum schema for a page navigation setting parameter. [`var relativeCharacterSpacingChange: some AppSchemaEnum`](/documentation/AppIntents/AppSchema/BooksEnum/relativeCharacterSpacingChange) An enum schema for a relative character spacing change parameter. [`var relativeFontChange: some AppSchemaEnum`](/documentation/AppIntents/AppSchema/BooksEnum/relativeFontChange) An enum schema for a relative font change parameter. [`var relativeLineSpacingChange: some AppSchemaEnum`](/documentation/AppIntents/AppSchema/BooksEnum/relativeLineSpacingChange) An enum schema for a relative line spacing change parameter. [`var relativeWordSpacingChange: some AppSchemaEnum`](/documentation/AppIntents/AppSchema/BooksEnum/relativeWordSpacingChange) An enum schema for a relative word spacing change parameter. [`var theme: some AppSchemaEnum`](/documentation/AppIntents/AppSchema/BooksEnum/theme) An enum schema for a theme parameter. [`protocol BooksEnum`](/documentation/AppIntents/AppSchema/BooksEnum) Identifies enum schemas in the books domain. ### Deprecated schemas [`var playAudiobook: some AppSchemaIntent`](/documentation/AppIntents/AppSchema/BooksIntent/playAudiobook) An intent schema that plays an audiobook. [`var search: some AppSchemaIntent`](/documentation/AppIntents/AppSchema/BooksIntent/search) An intent schema that opens the app and searches for the given term. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)